I hope you were easily able to understand my situation through the question.

1.Do we have any theme or plugin for on-spot editing the post by people or by me after the blog post is posted?

2.If there isn't any theme or pluggin for such feature should I make plugin or theme independently for my website.

3.If both of the above fails,please give me a better option for some other kind of CMS as there are no many cms and I want to make my website with dynamic features. Please follow the link below and kindly suggest me one.